Jack Black JackZen Cleanser for Body & Hair, 10 oz.Jack Black JackZen Cleanser for Body & Hair, 10 oz. Find your center with the soothing, zen like fragrance. One minute its the calm of layer upon layer of deep greens, the next its earthy, sensual, compelling. JackZen provides a rich lather that works on both body and hair, gently washing away dirt and sweat. The intriguing notes of Black Pepper, Clary Sage, Violet, and Bamboo combine for a renewing, restorative shower experience. Top Notes: Rhubarb,